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Test enough room for checksum in superblock

dev
Bimba Shrestha 2019-11-22 17:25:36 -08:00
parent 10bce1919e
commit 707a12c419
1 changed files with 13 additions and 1 deletions
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14
tests/fuzzer.c
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@ -427,7 +427,6 @@ static int basicUnitTests(U32 const seed, double compressibility)
} }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with null dict : ", testNb++);
{ ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
{ size_t const r = ZSTD_decompress_usingDict(dctx,
@ -490,6 +489,19 @@ static int basicUnitTests(U32 const seed, double compressibility)
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3d: superblock enough room for checksum : ", testNb++)
{
/* This tests whether or not we leave enough room for the checksum at the end
* of the dst buffer. The bug that motivated this test was found by the
* stream_round_trip fuzzer but this crashes for the same reason and is
* far more compact than re-creating the stream_round_trip fuzzer's code path */
ZSTD_CCtx *cctx = ZSTD_createCCtx();
ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 64);
assert(!ZSTD_isError(ZSTD_compress2(cctx, compressedBuffer, 1339, CNBuffer, 1278)));
ZSTD_freeCCtx(cctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3d : check CCtx size after compressing empty input : ", testNb++);
{ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
size_t const r = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 19);